Sigil

Sigil may refer to:
 * SIGIL, a 2019 episode replacement released for Doom by John Romero.
 * SIGIL II, an in-progress sequel to SIGIL.
 * The Sigil of the One God, the ultimate weapon of Strife: Quest for the Sigil.
 * The Sigil of the Magus, a puzzle item in Hexen.